20MB/s (160Mbps) is very slow for a new standard. I would think if they're going to develop something like this, they'd develop it closer to today's standards vs something that would have been expected several years ago. It's only 1/3 of the speed of USB 2, which is painfully slow as it is, and several times slower than modern Wi-Fi. Considering it's for short-range transmission, it should use high-frequency, which means high-bandwidth, and should be capable of much higher speeds. At the proposed speed, it will certainly be sufficient for transferring documents, photos, music, and even smaller videos, but its usability for larger, multi-GB files, will be limited right out of the gate.